Stabilizer



LsTuPAR.

STAB|LIZEB.-

APPLICATION HLED NOV. l0; I916- RENEWED MAR-27.1919.

Patented June 10 2 SHEETS-SHEET I.

J. STUPAR.

STABILIZER.

APPLICATION FILED NOV. 10, 1916. RENEWED MAR. 21, 1919.

1 $06,318. Patent-ed June 10, 1919.

2 SHEETS-SHEET 2.

ms Numus PEYERS cc. mom-urns, WASHIIICTDPL o. c.

plied to a cylindrical device,

JOSEPH STUPAR, 0F HONOLULU, TERRITORY OF HAWAII.

, STABILIZER.

Application filed November 10, 1916, Serial 110. 130,601.

To all whom it may concern Be it known that I, J osnrrr STUPAR, a citizen of the United States, residing at Hono lulu, 1n the county of Oahu and Territory of Hawaii, have invented certain new and useful Improvements in Stabilizers,of which the following is a specification.

This invention has for an object to pro vide a balancing aerial craft and for similar uses where such a device is needed. It is an important aim to provide a device of this character which will operate automatically, and in which there is provided means normally tending to act, and in which the forces are balanced and adapted to be unbalanced easily for opposite effects, as desired. An important object is to provide a novel device for control ling movement of a through the application pressure, and for eifecting application of the power to the weight. A further important object is to perfect a desirable mechanism whereby the application of force to the movement of the weight may be readily controlled by a pendulum. 1

[Additional objects, advantages and features of invention lie in the specific construction of parts hereinafter set forth, the arrangement and combination of parts.

In the drawings forming a part of this application,

Figure 1 is an elevational view vice applied to an aeroplane,

Fig. 2 is a similar view of the device such as a submarine boat or adirigible balloon,

Fig. 3 is a detail sectional view of air connections and controlling parts,

Fig. 4 illustrates a modification of the device.

Fig. 5 is a cross section on the line 55 of Fig. 2,

Fig. 6 is a similar view on the line 66 of Fi 3.

There is illustrated 10 of an familiar construction, case a biplane being shown, and mounted upon the lower wing there is atube 11, of suitable diameter for containing a liquid weight 12, suificient to fill the device from one end to the middle and normally extendof the de in Fig. 1 an aeroplane ing half way of each'end portion of the pipe 11 as shown, at 12, the pipe being inclined upwardly from the center of the plane toward one side and then vertically as at 14,

Specification of Letters Patent.

device for nautical and balancing weight of moderate a1r in the present Patented June 10, 1919. Renewed March 27, 1919. Serial No. 285,709.

one of the structural struts 13 between the wings of the craft being extended vertically behind to a suitable height. At the upper ends of the pipe 11 there are fitted reducers 15, from which smaller pipes 16 extend to a central point on the aeroplane where means is provided to alternatively supply air under pressure to one, and opening the other of the pipes 16, for relief of pressure therethrough. As shown in greater detail in Fig. 3, a pendulum 20 is mounted at a suitable point, the weight 20 of which is carried in a curved casing 21, whereby it is protected from the effects of air pressure, air currents, or other disturbing causes excepting gravity, and if desired may be held in the proper path by a small track 22, and rollers 23 mounted on the pendulum to engage the track. The pendulum is extended above the weight and is provided with a handle 2 1 by which it may be manually operatedwhen desired. By reason of the nature of the controlling device subsequently to be described, it is unnecessary that the pendulum have a considerable length, and as shown, it may be located in a very small space within the machine. The casing 21 m y be mounted upon a suitable bracket 25 mounted in any suitable way, and the casing may include a valve device 26 including a casing 27 having parallel passages 28 extending therethrough across which a small valve plate 29 is adapted to move, being suitably connected to the upper end of the pendulum 20, which is pivoted therebelow, immediately at the under side of the casing 27. From the passages 28 ducts 30 lead in opposite directions these being branched at their outer parts, one arm 31 of each opening directly to the atmosphere, while the other is connected suitably to one of the pipes 16, at respective sides of the aeroplane. At the point where the ducts branch small valves 32 of a suitable type for closing each branch 31 are located so that a clear passage will be provided through the duct 30 to the adjacent pipe 16, and constructed in a manner so that'limited movement of the valve will close the duct 30, and form communications between the branch 31 and pipe 16. In the present instance, these valves comprise simply pivoted plates 33 a suitable manner to links 34, leading to the lower part of the pendulum a short distance fbelow the pivot, so that as the pendulum swings toward one side, the valve 32 atthe side will be operated to open the branch 31 and close the duct, while at the opposite side thevalve 32 is operated to close the branch 31 and open the duct for communication with the pipe 16, whereby air pressure may be directed to this end of the pipe and the opposite pipe relieved of pressure, and displacement of the water will balance the device as will be understood.

Ablo'wer casing 35 is mounted over the valve 26, in which a fan 36 is mounted, to be driven by a belt 37 from the engine, and here shown formally as connected to the shaftof the propeller 38 of any usual construction.

With the blower operating toward the ducts 30, it will be seen that with the craft normally balanced air under equal pressure will be applied through each of the ducts 30,

which will be'vented through the branches .31. These branches are preferably directed toward the rear of the machine, so that no back pressure will be encountered. Should the aeroplane incline downwardly to one side, the swinging of the pendulum toward that side will operate to close thevalve 29 over the duct 30 at the opposite side and open the valve 32 to the adjacent branch 31, consequently directing pressure with force through the duct 30 and pipe 16 against the body of liquid toward the high side of the machine. This will quickly restore the machine to its proper balance, and its return will cause the the pendulum to equalize the operation of opposite ends of the pipe 11,

pressure at whereby the liquid therein is permitted to return to normal level.

In Fig. 2 the device is shown adapted to use ma craft having such form as customary in submarines or dirigible balloons, and is loosely within the pipe, and suitably apertured to permit free flow of liquid therethrough. These are engaged snugly upon the rod at regular intervals. In this case,

in the lower end portion of the pipe 11, whereby the liquid is displaced.

the sheathing of the balloon may be eX tended around the pipe 11, which may be utilized for a stifiening element, and in a submarine the pipe'may be extended closely around the inner side of the shell of the vessel interfermg 1n a mmimum degree with the utilization of the space within the vessel for other purposes. r

Fig. l illustrates a modifiation of the device in which the device is adapted tense in anoval form instead of circularform, and

pistons 40 are employed on each side of the:

body of fluid 12', the nected in any way, serving simply to prevent passage of air pastthe fluid. at any time. The operation of the device otherwise, and

pistons not being cone the construction of thegoverning device is the same as before described.

In connection with any of theforms of the device described, a supplementary tank 50 may be connected to the tube, containing a quantity of liquid under pressure or otherwise, by

evaporation or otherwise. hat 1s clanned is:

1. A stabilizing device comprising abal-f ance tube, a longitudinally movable balance element therein of a character to be moved by air pressure; at one end of the tube, a device for supplying air or the like under pressure, ducts leading therefrom to-respective ends of the pipe, branches opening from the ducts to the atmosphere, a pendulum, and means actuated by the pendulum for alternatively closing said ducts, and opening the adjacent-branches upon oscillation of the pendulum in respective directions. z,

2. In a device ofthe class described, a balance tube, an element longitudinally movable therein adapted for movement by action which the supply in the tube may be replenished tocompensate for, losses by. V

of air pressure in either end of the tube,' a blower, ducts from the blower to opposite ends of said tube, a valve device for closing the ducts alternatively, vent branches from the ducts, valve means for closing the branches, a pendulum including a stem por-'-' tion pivoted intermediately of its length, connections between the upper end of the stem and the first named valve, and connections between the last rnamed valve-and the lower portion of the stem for o eningthe branch of a duetclosed by'the valve. H

In testimony whereof I have afiixed my signature in presence of two witnesses.

V J OSEPHJSTUPAR.

Witnesses: V V i LEON M. Srmus, V EDWARDB. M LANEY. r

rst named Copies of'this patent may be obtained for five cents each, by addressing t1 e Commissioner of Patents,

- ,Washington, D. G. c 7 t 

